Some weeks I do well on this, other weeks are like pulling teeth and this is one of those weeks. When I saw the answer to 47d (basically a word that does not exist) I knew I would not enjoy this. Wouldn't mind a couple of explanations before giving up:
5 Novel about Churchill's bunker (3,6) The ------
15a Two toys are nearly maximum price (3,6)
Top dollar? (is dollar a toy?)
17a No time for sexy poetry after hard alexandrines (6,5)